A study of measurement the load impedance mismatch

Author

Soosul Hwang ; Sung-Yong Hong

Author_Institution

Korea Aerosp. Res. Inst., Daejeon, South Korea

fYear

2011

fDate

24-25 Aug. 2011

Firstpage

1

Lastpage

2

Abstract

This paper presents a simple method for measurement the unknown load impedance mismatch between amplifier and antenna. The method to measure load impedance mismatch consists of sections of transmission line and voltage measurements at appropriate locations along the transmission line. Simulation is performed using Agilent´s ADS software tool to determine the physical dimensions and the circuit characteristics. And AD834 quadrant multiplier is used to voltage sensor for measuring the 3-point voltage on sectioned transmission line. Simulation and test results show good agreement with theoretical predictions.

Keywords

amplifiers; antennas; electric impedance measurement; electric sensing devices; multiplying circuits; transmission line theory; voltage measurement; 3-point voltage measurement; AD834 quadrant multiplier; Agilent ADS software tool; amplifier; antenna; circuit characteristics; load impedance mismatch measurement; sectioned transmission line; voltage sensor; Antenna measurements; Impedance; Impedance measurement; Power transmission lines; Prediction algorithms; Transmission line measurements; Voltage measurement; impedance mismatch; impedance selection algorithm; sectioned transmission line; voltage sensor;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Radio for Future Personal Terminals (IMWS-IRFPT), 2011 IEEE MTT-S International Microwave Workshop Series on

Conference_Location

Daejeon

Print_ISBN

978-1-4577-0961-6

Electronic_ISBN

978-1-4577-0963-0

Type

conf

DOI

10.1109/IMWS2.2011.6027206

Filename

6027206